Thankfully, when GM debuted the LLY Duramax in 2004, the engineering team had corrected the fuel injector issue altogether.Just FYI -- the upgraded injectors are not only more reliable than the ...

In mid-2004, Chevy followed up the LB7 with the LLY Duramax, which boasted a new injector design that made servicing much easier. Debuting in the same heavy-duty Chevy Silverado and GMC Sierra ...

The fuel injectors used for '041/2 to '05 LLY Duramax engines had a six-hole spray pattern from the tip while the '06 version of the LLY employed a seven-hole design that also featured a double ...

In the world of diesel engines, the Duramax series by General Motors holds a special place and is known for its robust performance and reliability. However, like many modern diesel engines, the ...

Early in the history of Duramax engines, GM changed the LB7 series of engines to LLY, but it can be difficult to tell them apart. Here’s how.

The fuel injectors used for '041/2 to '05 LLY Duramax engines had a six-hole spray pattern from the tip while the '06 version of the LLY employed a seven-hole design that also featured a double ...